Last modified by Bei Jinggeng on 2025/01/16 11:36
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From version < 60.2 >
edited by Xiaoling
on 2022/06/14 10:49
To version < 58.19 >
edited by Xiaoling
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Title
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1 -RS485-LN – RS485 to LoRaWAN Converter User Manual
1 +RS485-LN – RS485 to LoRaWAN Converter
Content
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3 3  
4 4  
5 5  
6 +**RS485-LN – RS485 to LoRaWAN Converter User Manual**
6 6  
7 7  
8 8  
... ... @@ -91,7 +91,6 @@
91 91  * Automatic RF Sense and CAD with ultra-fast AFC.
92 92  * Packet engine up to 256 bytes with CRC
93 93  
94 -
95 95  == 1.3 Features ==
96 96  
97 97  * LoRaWAN Class A & Class C protocol (default Class C)
... ... @@ -235,15 +235,11 @@
235 235  
236 236  (((
237 237  (((
238 -(((
239 239  There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
240 240  )))
241 -)))
242 242  
243 243  (((
244 -(((
245 245  (% style="color:red" %)Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1
246 -)))
247 247  
248 248  
249 249  )))
... ... @@ -312,6 +312,7 @@
312 312  )))
313 313  
314 314  
311 +
315 315  === 3.3.2 Configure sensors ===
316 316  
317 317  (((
... ... @@ -323,20 +323,15 @@
323 323  (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
324 324  |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
325 325  |AT+CFGDEV|(% style="width:110px" %)(((
326 -(((
327 327  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
328 -)))
329 329  
330 -(((
331 331  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
332 -)))
333 333  
334 -(((
335 335  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
336 -)))
337 337  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
338 338  
339 339  
331 +
340 340  === 3.3.3 Configure read commands for each sampling ===
341 341  
342 342  (((
... ... @@ -1095,121 +1095,61 @@
1095 1095  
1096 1096  == 3.6 Listening mode for RS485 network ==
1097 1097  
1098 -(((
1099 1099  This feature support since firmware v1.4
1100 -)))
1101 1101  
1102 -(((
1103 1103  RS485-LN supports listening mode, it can listen the RS485 network packets and send them via LoRaWAN uplink. Below is the structure. The blue arrow shows the RS485 network packets to RS485-LN.
1104 -)))
1105 1105  
1106 1106  [[image:image-20220602171200-8.png||height="567" width="1007"]]
1107 1107  
1108 -(((
1109 1109  To enable the listening mode, use can run the command AT+RXMODE.
1110 -)))
1111 1111  
1112 -(((
1113 -
1114 -)))
1115 1115  
1116 -(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1117 -|=(% style="width: 100px;" %)(((
1118 -**Command example**
1119 -)))|=(% style="width: 400px;" %)(((
1120 -**Function**
1121 -)))
1122 -|(% style="width:100px" %)(((
1123 -AT+RXMODE=1,10
1124 -)))|(% style="width:400px" %)(((
1125 -Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
1126 -)))
1127 -|(% style="width:100px" %)(((
1128 -AT+RXMODE=2,500
1129 -)))|(% style="width:400px" %)(((
1130 -Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
1131 -)))
1132 -|(% style="width:100px" %)(((
1133 -AT+RXMODE=0,0
1134 -)))|(% style="width:400px" %)(((
1135 -Disable listening mode. This is the default settings.
1136 -)))
1137 -|(% style="width:100px" %)(((
1138 -
1139 -)))|(% style="width:400px" %)(((
1140 -A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1141 -)))
1099 +(% border="1" style="background-color:#ffffcc; width:500px" %)
1100 +|=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
1101 +|(% style="width:161px" %)AT+RXMODE=1,10 |(% style="width:337px" %)Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
1102 +|(% style="width:161px" %)AT+RXMODE=2,500|(% style="width:337px" %)Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
1103 +|(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
1104 +|(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 ~| cc)
1142 1142  
1143 -(((
1144 1144  **Downlink Command:**
1145 -)))
1146 1146  
1147 -(((
1148 1148  **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1149 -)))
1150 1150  
1151 -(((
1152 -
1153 -)))
1154 1154  
1155 -(((
1156 1156  **Example**:
1157 -)))
1158 1158  
1159 -(((
1160 1160  The RS485-LN is set to AT+RXMODE=2,1000
1161 -)))
1162 1162  
1163 -(((
1164 1164  There is a two Modbus commands in the RS485 network as below:
1165 -)))
1166 1166  
1167 -(((
1168 1168  The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1169 -)))
1170 1170  
1171 -(((
1172 1172  And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1173 -)))
1174 1174  
1175 -(((
1176 1176  RS485-LN will capture both and send the uplink: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b  (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1177 -)))
1178 1178  
1179 -(((
1180 1180  [[image:image-20220602171200-9.png]]
1181 -)))
1182 1182  
1183 -(((
1184 -
1185 -)))
1186 1186  
1187 -(((
1188 -(((
1189 1189  (% style="color:red" %)Notice: Listening mode can work with the default polling mode of RS485-LN. When RS485-LN is in to send the RS485 commands (from AT+COMMANDx), the listening mode will be interrupt for a while.
1190 -)))
1191 -)))
1192 1192  
1193 1193  
1194 1194  == 3.7 Buttons ==
1195 1195  
1196 1196  
1197 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1198 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1199 -|(% style="width:50px" %)**ACT**|(% style="width:361px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
1200 -|(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1201 -|(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1132 +(% border="1" style="background-color:#f7faff; width:500px" %)
1133 +|=**Button**|=(% style="width: 1420px;" %)**Feature**
1134 +|**ACT**|(% style="width:1420px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
1135 +|**RST**|(% style="width:1420px" %)Reboot RS485
1136 +|**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1202 1202  
1203 -
1204 1204  == 3.8 LEDs ==
1205 1205  
1206 -
1207 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1208 -|=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1140 +(% border="1" style="background-color:#f7faff; width:500px" %)
1141 +|=**LEDs**|=**Feature**
1209 1209  |**PWR**|Always on if there is power
1210 -|**SYS**|After device is powered on, the SYS will (% style="color:green" %)**fast blink in GREEN**(%%) for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)**on GREEN for 5 seconds** (%%)**. **SYS will (% style="color:green" %)**blink Blue**(%%) on every upload and (% style="color:green" %)**blink Green**(%%) once receive a downlink message.
1143 +|**SYS**|After device is powered on, the SYS will (% style="color:green" %)**fast blink in GREEN** (%%)for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)**on GREEN for 5 seconds**(%%)**. **SYS will (% style="color:green" %)**blink Blue**(%%) on every upload and (% style="color:green" %)**blink Green**(%%) once receive a downlink message.
1211 1211  
1212 -
1213 1213  = 4. Case Study =
1214 1214  
1215 1215  User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN RS485-BL.WebHome]]
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1219 1219  
1220 1220  == 5.1 Access AT Command ==
1221 1221  
1222 -(((
1223 1223  RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
1224 -)))
1225 1225  
1226 1226  [[image:1654162355560-817.png]]
1227 1227  
1228 1228  
1229 -(((
1230 1230  In PC, User needs to set (% style="color:blue" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console of RS485-BL. The default password is 123456. Below is the output for reference:
1231 -)))
1232 1232  
1233 1233  [[image:1654162368066-342.png]]
1234 1234  
1235 1235  
1236 -(((
1237 1237  More detail AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1238 -)))
1239 1239  
1240 1240  
1241 -
1242 1242  == 5.2 Common AT Command Sequence ==
1243 1243  
1244 1244  === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
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1261 1261  )))
1262 1262  
1263 1263  
1264 -(((
1265 1265  If device already joined network:
1266 -)))
1267 1267  
1268 1268  (% class="box infomessage" %)
1269 1269  (((
... ... @@ -1302,12 +1302,10 @@
1302 1302  
1303 1303  (% style="color:red" %)**Note:**
1304 1304  
1305 -(((
1306 1306  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1307 1307  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1308 1308  3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1309 1309  4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1310 -)))
1311 1311  
1312 1312  [[image:1654162478620-421.png]]
1313 1313  
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1316 1316  
1317 1317  == 6.1 How to upgrade the image? ==
1318 1318  
1319 -(((
1320 1320  The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1321 -)))
1322 1322  
1323 -* (((
1324 -Support new features
1325 -)))
1326 -* (((
1327 -For bug fix
1328 -)))
1329 -* (((
1330 -Change LoRaWAN bands.
1331 -)))
1242 +* Support new features
1243 +* For bug fix
1244 +* Change LoRaWAN bands.
1332 1332  
1333 -(((
1334 1334  Below shows the hardware connection for how to upload an image to RS485-LN:
1335 -)))
1336 1336  
1337 1337  [[image:1654162535040-878.png]]
1338 1338  
1339 -(((
1340 1340  **Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1341 -)))
1342 1342  
1343 -(((
1344 1344  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1345 -)))
1346 1346  
1347 -(((
1348 1348  **Step3: **Open flashloader; choose the correct COM port to update.
1349 -)))
1350 1350  
1351 1351  (((
1352 -(((
1353 -(((
1354 1354  (% style="color:blue" %) Hold down the PRO button and then momentarily press the RST reset button and the SYS led will change from OFF to ON, While SYS LED is RED ON, it means the RS485-LN is ready to be program.
1355 1355  )))
1356 -)))
1357 -)))
1358 1358  
1359 1359  
1360 1360  [[image:image-20220602175818-12.png]]
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1417 1417  * (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1418 1418  * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1419 1419  
1321 +
1420 1420  = 9.Packing Info =
1421 1421  
1422 1422  
... ... @@ -1433,6 +1433,7 @@
1433 1433  * Package Size / pcs : 14.5 x 8 x 5 cm
1434 1434  * Weight / pcs : 170g
1435 1435  
1338 +
1436 1436  = 10. FCC Caution for RS485LN-US915 =
1437 1437  
1438 1438  (((

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